GELI safe to reboot without detach?

[Isaac Huff]

Is it necessary from a reliability and/or security standpoint to detach
GELI volumes before rebooting?  Specifically, if I unmount the filesystem,
but do not detach (and disable auto-detach) - do I risk data corruption or
leakage of private keys during a normal reboot process?

Are there any risks at all to rebooting without detach?  I have been
searching the list archives and can't seem to find a statement either way.

Thank you,
Isaac Huff